NO750418L - - Google Patents
Info
- Publication number
- NO750418L NO750418L NO750418A NO750418A NO750418L NO 750418 L NO750418 L NO 750418L NO 750418 A NO750418 A NO 750418A NO 750418 A NO750418 A NO 750418A NO 750418 L NO750418 L NO 750418L
- Authority
- NO
- Norway
- Prior art keywords
- lens
- reading
- track
- radiation
- curvature
- Prior art date
Links
- 230000005855 radiation Effects 0.000 claims description 22
- 230000003287 optical effect Effects 0.000 claims description 9
- 238000004804 winding Methods 0.000 claims description 7
- 238000006073 displacement reaction Methods 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000010355 oscillation Effects 0.000 description 2
- 230000010363 phase shift Effects 0.000 description 2
- 206010010071 Coma Diseases 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000005236 sound signal Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
- G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
- G11B7/085—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam into, or out of, its operative position or across tracks, otherwise than during the transducing operation, e.g. for adjustment or preliminary positioning or track change or selection
- G11B7/08547—Arrangements for positioning the light beam only without moving the head, e.g. using static electro-optical elements
Landscapes
- Optical Recording Or Reproduction (AREA)
- Optical Head (AREA)
- Mechanical Optical Scanning Systems (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NLAANVRAGE7401937,A NL171641C (nl) | 1974-02-13 | 1974-02-13 | Inrichting voor het uitlezen van een registratiedrager waarop informatie is aangebracht in een optisch uitleesbare structuur. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NO750418L true NO750418L (xx) | 1975-08-14 |
Family
ID=19820737
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NO750418A NO750418L (xx) | 1974-02-13 | 1975-02-10 |
Country Status (17)
| Country | Link |
|---|---|
| US (1) | US3924063A (xx) |
| JP (1) | JPS5622062B2 (xx) |
| AT (1) | AT337268B (xx) |
| AU (1) | AU496928B2 (xx) |
| BE (1) | BE825416A (xx) |
| CA (1) | CA1046636A (xx) |
| CH (1) | CH584418A5 (xx) |
| DE (1) | DE2503952C2 (xx) |
| DK (1) | DK137355B (xx) |
| ES (1) | ES434625A1 (xx) |
| FR (1) | FR2260843B1 (xx) |
| GB (1) | GB1502151A (xx) |
| IT (1) | IT1031582B (xx) |
| NL (1) | NL171641C (xx) |
| NO (1) | NO750418L (xx) |
| SE (1) | SE398789B (xx) |
| ZA (1) | ZA75234B (xx) |
Families Citing this family (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2280150B1 (fr) * | 1974-07-26 | 1977-01-07 | Thomson Brandt | Dispositif de detection d'ecart de mise au point d'une tete de lecture optique par rapport a une surface de lecture |
| NL182594C (nl) * | 1975-03-12 | 1988-04-05 | Philips Nv | Afspeelinrichting, in het bijzonder videospeler, voor het afspelen van een van een centraal gat voorziene uit transparant materiaal vervaardigde plaat, alsmede aanpassingsplaat ten gebruike bij deze inrichting. |
| NL181060C (nl) * | 1975-10-03 | 1987-06-01 | Philips Nv | Electromagnetisch bestuurbare straaldeflectie-inrichting. |
| NL176315C (nl) * | 1976-05-12 | 1985-03-18 | Philips Nv | Optische aftastinrichting. |
| NL7703123A (nl) * | 1977-03-23 | 1978-09-26 | Philips Nv | Inrichting voor het uitlezen van een optische stralingsreflekterende registratiedrager. |
| NL7703232A (nl) * | 1977-03-25 | 1978-09-27 | Philips Nv | Optische aftastinrichting. |
| JPS5826088B2 (ja) * | 1977-12-12 | 1983-05-31 | 日本ビクター株式会社 | 光学的情報記録媒体円盤再生装置における可動レンズ装置 |
| US4385373A (en) * | 1980-11-10 | 1983-05-24 | Eastman Kodak Company | Device for focus and alignment control in optical recording and/or playback apparatus |
| US4432085A (en) * | 1981-10-30 | 1984-02-14 | Rca Corporation | Dual input telescope for multi-beam optical record and playback apparatus |
| JPH0675298B2 (ja) * | 1981-12-19 | 1994-09-21 | 富士通株式会社 | 光学式情報再生装置 |
| JPS58114334A (ja) * | 1981-12-26 | 1983-07-07 | Fujitsu Ltd | 光学ヘツド |
| US4550249A (en) * | 1983-04-21 | 1985-10-29 | At&T Bell Laboratories | Optical disc read/write apparatus |
| JPS60131648A (ja) * | 1983-12-19 | 1985-07-13 | Toshiba Corp | 光学ヘツド |
| US4760565A (en) * | 1986-09-15 | 1988-07-26 | International Business Machines Corporation | High speed track access for optical disks using acousto-optic deflector |
| US4827365A (en) * | 1987-07-24 | 1989-05-02 | Olympus Optical Co., Inc. | Assembly for accessing information recording medium |
| US5090002A (en) * | 1989-03-07 | 1992-02-18 | International Business Machines Corporation | Positioning systems employing velocity and position control loops with position control loop having an extended range |
| JP2002515624A (ja) | 1998-05-13 | 2002-05-28 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | 記録担体を光学的に走査する装置 |
| JP3666632B2 (ja) * | 1998-12-11 | 2005-06-29 | パイオニア株式会社 | 収差補正装置及びこれを用いた光ピックアップ装置 |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3381086A (en) * | 1962-08-16 | 1968-04-30 | Minnesota Mining & Mfg | Reproduction of television signals from photographic disc recordings |
| US3302543A (en) * | 1963-10-21 | 1967-02-07 | Karl F Ross | Wide-angle dioptric system |
| US3530258A (en) * | 1968-06-28 | 1970-09-22 | Mca Technology Inc | Video signal transducer having servo controlled flexible fiber optic track centering |
| FR2174353A5 (xx) * | 1972-02-29 | 1973-10-12 | Thomson Csf | |
| US3829622A (en) * | 1972-10-24 | 1974-08-13 | Mca Disco Vision | Video disc player with variably biased pneumatic head |
-
1974
- 1974-02-13 NL NLAANVRAGE7401937,A patent/NL171641C/xx active Search and Examination
- 1974-04-29 US US464732A patent/US3924063A/en not_active Expired - Lifetime
-
1975
- 1975-01-13 ZA ZA00750234A patent/ZA75234B/xx unknown
- 1975-01-31 DE DE2503952A patent/DE2503952C2/de not_active Expired
- 1975-02-06 CA CA219,523A patent/CA1046636A/en not_active Expired
- 1975-02-10 AU AU78027/75A patent/AU496928B2/en not_active Expired
- 1975-02-10 GB GB5489/75A patent/GB1502151A/en not_active Expired
- 1975-02-10 NO NO750418A patent/NO750418L/no unknown
- 1975-02-10 CH CH156575A patent/CH584418A5/xx not_active IP Right Cessation
- 1975-02-10 IT IT20090/75A patent/IT1031582B/it active
- 1975-02-10 SE SE7501409A patent/SE398789B/xx unknown
- 1975-02-10 AT AT97975A patent/AT337268B/de not_active IP Right Cessation
- 1975-02-10 DK DK48175AA patent/DK137355B/da unknown
- 1975-02-11 ES ES434625A patent/ES434625A1/es not_active Expired
- 1975-02-11 BE BE153261A patent/BE825416A/xx unknown
- 1975-02-13 FR FR7504507A patent/FR2260843B1/fr not_active Expired
- 1975-02-13 JP JP1752775A patent/JPS5622062B2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DK48175A (xx) | 1975-10-06 |
| IT1031582B (it) | 1979-05-10 |
| US3924063A (en) | 1975-12-02 |
| CA1046636A (en) | 1979-01-16 |
| ZA75234B (en) | 1976-08-25 |
| AU496928B2 (en) | 1978-11-09 |
| ES434625A1 (es) | 1977-02-01 |
| SE398789B (sv) | 1978-01-16 |
| NL7401937A (nl) | 1975-08-15 |
| JPS50115842A (xx) | 1975-09-10 |
| GB1502151A (en) | 1978-02-22 |
| DE2503952A1 (de) | 1975-08-14 |
| FR2260843A1 (xx) | 1975-09-05 |
| DK137355B (da) | 1978-02-20 |
| AT337268B (de) | 1977-06-27 |
| FR2260843B1 (xx) | 1978-02-03 |
| AU7802775A (en) | 1976-08-12 |
| ATA97975A (de) | 1976-10-15 |
| JPS5622062B2 (xx) | 1981-05-22 |
| SE7501409L (xx) | 1975-08-14 |
| NL171641C (nl) | 1983-04-18 |
| DK137355C (xx) | 1978-07-17 |
| DE2503952C2 (de) | 1982-12-09 |
| BE825416A (fr) | 1975-08-11 |
| CH584418A5 (xx) | 1977-01-31 |
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